Assxgtob to the dayton engineering



W. A. CHRYST.

BINDING POST. APPLICATION- FILED JAN. 6, 1913.

Patented Aug. 8, 1916.

WWWQM A ZZ OF'YZQQS WILLIAM A. CHRYST, OF DAYTON, LABORATORIES OHIO, ASSIGNOR TC) 00., A COREQBATEON OF OHIO.

THE DAYTON ENGINEERING BINDING-$05353.

Specification of Letters Patent.

Application filed January 6, 1913. Serial No. 740,437.

To all whom it may concern.-

Beit known that 1, WILLIAM. a citizen ot' the United States, residing at Dayton,"county of Montgomery, and State of Qhio, have invented certain new and use- A. Crrevs'r,

ful' ln'irovements in Binding Posts, of

which the following is a full; clear, a-ndexact description.

This invention re ates to an improvement in terminal or binding posts and has for one of its objects to provide a device ct this character, which will support a plurality of terminal clips or wires.

A further object ofthis invention is to so combine the elements thereof, that the structure will be simple and compact, and especially adaptable to be used in places, wherein economy of space is desired or essential.

With the above and incidental objects in view, there is shown in the accompanying drawings, a preferred form of one embodiment of my present invention, a detail description of which will now be given.

In the drawings Figure]. is a vertical sectional view of a binding post embodying the resent invention, taken on the line 2-2 of ig. 2. Fig.2 is a view in side elevation of a binding post embodying the present inven tion. Fig. 3 is a sectional viewof a modified form of the present invention. Fig. 4

is a detail perspective View of the terminal cli 'iieferring to the drawings: Figs. 1 and 2 discloses a binding or terminal post which is adapted to receive electrical connections which are to be insulated from each other, while in Fig. 3, there is shown a terminal post which is adapted to form a part of the circuit to which the terminals, secured to the post, are a part. i

In Figs. 1 and 2, it will be seen that the binding post comprises a central rod or stud 20, having a flange or projection 21, formed intermediate the ends thereof and providing a base for the spring pressed cap or sleeve 23, of the upper clamping element or binding post. This cap or sleeve is counterbored, as at 24, and has the spring 2.), seated in the counterbored portion. A shoulder, formed by counter-boring said,sl.eeve.

acts as one abutment for the spring 25, and the plate 26, which is secured to the extremity of the stud 20, constitutes the opposite abutment. From this. construction, 1t will to the binding post.

be seen that the spring 25 normally maintains the cap or sleeve 23 in contact with the flange 21.

Patented Aug. 8, 1916.

The binding post structure disclosed herein is adapted to receive a specially construct ed clip, which may be fastened to the end of a Wire or conductor, which is to be secured This terminal clip comprises a shank portion 29, provided with a head 30, wherein an annular opening 31,

In order to secure the terminal clip 28 against accidental removal from its applied position, the diameter of the opening 31 is made slightly greater than the diameter of the locking shoulder 27, but less than the diameter of the flange 21, while the diameter of the entrance opening 32 is greater thanthe diameter of that portion of the stud 20, which is surrounded by the sleeve 23, but is less than the diameter of the locking shoulder 27.

in Figs. 1 and 2, there is shown an additional clamping element. This clamping element is insulated from the structure heretofore described, so that an electrical connection may be made, which may be absolutely insulated from and independent of the electrical connection secured by the outer clamping element.

The central stud 20. is in the present instance surrounded by an insulated sleeve 41, which has at one end, the washer or head 42, one face of which lies adjacent to the washer 21. The opposite face of this washer 42 carries a metal facing 44, which forms a bearing element the movable sleeve 46. A metal tube 47, surrounds a portion of the said sleeve 41, and is reduced as at 48, thus forming the for the reduced end 45 of having an entrance opening 32, is formed.

shoulder 49, which furnishes one abutment "for the spring 50. This spring is mounted in the reduced portion of the metal sleeve 47, and tends to normally maintain the movable sleeve 46 in contact withthe metal facing 44 or the washer 42. The movable sleeve or clamping element 46 has an internal flange, as at 51, which forms an abutment, against which the spring normall presses, whereby this sleeve, as above stated, 18 maintained in contact with the metal facing 44 of the washer .42.

In a binding post of this type, a locking shoulder 52 is formed on the movable sleeve or clamping element, by reducing the clamping endthereof, as at 45, so that the terminal clip whichis'used in conjunction with this portion of the binding post, must have its main opening of greater diameter than the reduced portlon of the sleeve, while the entrance opening must be of less diameter with. Fig. 2.

than the diameter of the reduced portion 45, but of greater diameter than the cross sectional diameter of the metal tube, upon which the movable sleeve is mounted, and which in'reality forms the electrical connection. I

In Fig. 3 there is shown a modified form of the binding post illustrated in Figs. 1 and 2. This modified structure shown in Fig. 3,

comprises a terminal post of conductive material, whereby the respective terminals connected thereto, may have a common electrical connection with any circuit to which the body of the binding post may be connected -with. The structure of the post shown in Fig. 3 comprises a central stud, having a projection or flange 55, provided with a locking shoulder 56;

The cooperating clamping element 23', its controlling spring 25, and the plate 26,are substantially the same elements heretofore described in connection The arrangement of the lower clamping element 57, however, is directly mounted on the shank of the stud 20, and is maintained in clamping position, relative to Copies of this patent may be obtained for five cents as the corresponding I invention.

WVhatI claim is as followsi In a binding post, the combination with a plurality of movable clamping elements; of a supporting stud of conductive material having a shoulder cooperating with one of said clamping elements; an insulating sleeve separating said stud from the conductive ele' ments of the other clamping element, whereby independent circuit connections may be made with each ofsaid clamping elements and independent spring means operable relative to' said movable clamping elements to maintain the same in clamping position.

In testimony whereof I aflix my signature in the presence of two subscribing 'i'vi'tne'ssec.

' WILLIAM A. CHRYST.

Witnesses:

JOSEPH W. MCDONALD, OTTIS D. MOWRY.

each; by addressing the Commissioner of Patents,

Washington, D. 0. 

